dysprosium
Let an agent identify dysprosium and its properties, relay isotopes, production, uses and supply issues from reference sources, and distinguish it from neighbouring lanthanides.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What dysprosium is.
Properties
Properties.
Properties
Properties.
- What are the physical, chemical and magnetic properties of dysprosium? definition
- Is the question about dysprosium or a neighbouring lanthanide? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- Which isotopes exist, and how are they used? definition
- Which entry fits the specific isotope? action
Source Supply.
Production
Mining and separation.
Production
Production.
- Where is dysprosium mined and separated, and who produces it, with sources? provenance
- Which sources are cited? provenance
Policy
Critical material policy.
Policy
Policy.
- Why is dysprosium listed as critical, and what policies address supply, with positions attributed? provenance
- Is the presentation neutral? boundary
Use Uses.
Magnets
Magnets.
Magnets
Magnets.
- How does dysprosium improve neodymium magnets, and how is its use being reduced? provenance
- Which entry fits neodymium magnet? action
Other
Other uses.
Other
Other.
- How is dysprosium used in control rods, dosimeters, lasers and data storage? provenance
- Which references are standard? provenance
Context History and recycling.
Discovery
Discovery.
Discovery
Discovery.
- How was dysprosium discovered by Lecoq de Boisbaudran in 1886, and why was it named hard to get at? provenance
- Which entry fits the history of the rare earths? action
Recycling
Recycling.
Recycling
Recycling.
- How is dysprosium recovered from magnets, and what progress exists? provenance
- Which entry fits rare earth recycling? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- dysprosium-156, dysprosium-158, dysprosium-160, dysprosium-161, dysprosium-162, dysprosium-163, dysprosium-164, dysprosium-138, dysprosium-139, dysprosium-140, dysprosium-140m, dysprosium-141
What it is Filled
A chemical element with symbol Dy and atomic number 66, a silvery lanthanide with one of the highest magnetic strengths of the elements, obtained from monazite, bastnasite and ion-adsorption clays, used above all as an additive in neodymium magnets to preserve magnetism at high temperature in motors and wind turbines, and in control rods, dosimeters, lasers and data storage, with seven stable isotopes from dysprosium-156 to dysprosium-164; dysprosium is a critical material with concentrated supply.
Why it exists Filled
Let an agent identify dysprosium and its properties, relay isotopes, production, uses and supply issues from reference sources, and distinguish it from neighbouring lanthanides.
Distinguishing features Filled
- High magnetic moment
- Magnet additive
- Neutron absorption
- Critical material status
What robots and AI may and may not do Filled
Must not
- Misstate the origin of dysprosium to hide sourcing from conflict or polluting operations.
- Advise handling dysprosium powders without proper safety measures.
- Discard magnets containing it into general waste where recycling is required.
- Present supply-risk forecasts as certain.
Only with a human decision
- Approving procurement from sources flagged for environmental or labour abuse.
May
- Explain dysprosium's properties and its role in permanent magnets.
- Report production and supply figures with source and year.
Moral aspects Filled
- Rare earth mining and processing have polluted land and water near mines.
- Clean energy depends on it, so sourcing affects both climate goals and local communities.
Who is affected
- Communities near mines
- Mine and processing workers
- Users of clean energy technology
Owners Filled
Steward
The holder of each stock; mining rights are granted by the state where it is mined.
Links to other meta-models Filled
parent
- Q105789 - registry parent class
- Q19569 - registry parent class
related
- lanthanide - in registry terms
- heavy metal - in registry terms
- neodymium magnet - for temperature resistance
- terbium - element 65
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.dysprosium
- Wikidata: Q1843 (https://www.wikidata.org/wiki/Q1843)
- symbol: Dy
- CAS: 7429-91-6
Direct properties required Filled
- atomic number: 66 Z
- standard atomic weight: 162.5 u
- melting point: 1412 degrees C
- stable isotopes: 7 count - Dy-156, 158, 160, 161, 162, 163, 164
Recognition required Filled
- Element 66, symbol Dy
- Lanthanide additive for heat-resistant magnets
- Terbium and holmium are the neighbouring lanthanides
- A soft silvery metal that tarnishes slowly in air.
Capabilities and actions required Filled
- relay properties and isotopes
- explain production and uses
- relay supply and policy issues
- distinguish from other lanthanides
Hazards and failure modes required Filled
- Supply concentration and price spikes
- Environmental impact of ion-adsorption clay mining
- Confusing with neighbouring lanthanides
Standards and interfaces required Filled
- Critical raw material listings
- Rare earth export controls
- Chemical safety data sheets
Context of use required Filled
- High-temperature magnets, reactor control and specialised uses.
- dysprosium metal and alloys
- dysprosium compounds such as the oxide
- stable isotopes from dysprosium-156 to dysprosium-164
- dysprosium in magnets, control rods and dosimeters
Sources Filled
- Wikidata item Q1843: dysprosium - identity and sense of the item
- Wikipedia: Dysprosium - general description of the item
Open questions
- Should the magnet application be the primary linked entry?
- How should supply data be linked?
- The registry entry has merged aliases naming isotopes; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1843/spec.json